HP Agilent Keysight 85320B Reference Mixer Module 2 to 26.5 GHz

WR-10 Waveguide 60-110GHz Harmonic Mixer (OK to Use 220GHz)

HP, Agilent 85320A 2-26.5GHz Test Mixer Module, Max Input Power +26dBm 10VDC

HP Agilent Keysight 11970K Waveguide Harmonic Mixer, 18 to 26.5 GHz

WR-22 Waveguide 33-50GHz Harmonic Mixer

Anritsu Mixer for MS2687B Spectrum Analyzer good for 10-50GHz

Anritsu MA2744A 50-75GHz Harmonic Mixer (usable 47-90GHz)

GUNN OSCILLATOR X BAND ABOUT 10 GHz 8V WITH MODULATION INPUT